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1.1 root 1: //
2: // nono
1.1.1.3 root 3: // Copyright (C) 2020 nono project
4: // Licensed under nono-license.txt
1.1 root 5: //
6:
1.1.1.3 root 7: #include "xiospace.h"
1.1 root 8: #include "areaset.h"
1.1.1.2 root 9: #include "busio.h"
1.1 root 10: #include "crtc.h"
11: #include "dmac.h"
12: #include "fdc.h"
13: #include "gvram.h"
14: #include "mfp.h"
1.1.1.5 root 15: #include "opm.h"
16: #include "pedec.h"
1.1.1.2 root 17: #include "pio.h"
1.1.1.3 root 18: #include "pluto.h"
1.1 root 19: #include "printer.h"
20: #include "ram.h"
1.1.1.2 root 21: #include "romimg_x68k.h"
1.1 root 22: #include "rp5c15.h"
23: #include "scc.h"
24: #include "spc.h"
25: #include "sprite.h"
26: #include "sram.h"
27: #include "sysport.h"
28: #include "tvram.h"
1.1.1.3 root 29: #include "videoctlr.h"
1.1 root 30: #include "vm.h"
1.1.1.3 root 31: #include <typeinfo>
1.1 root 32:
33: //
34: // X68030 のメイン空間 ($000000-$FFFFFF) 担当。
35: //
36:
37: // 1つの 8KB ブロックを複数のデバイスで共有する場合
1.1.1.8 ! root 38: class MuxDevice : public IODevice
1.1 root 39: {
1.1.1.3 root 40: using inherited = IODevice;
1.1 root 41: public:
42: MuxDevice();
1.1.1.5 root 43: virtual ~MuxDevice() override;
1.1 root 44:
1.1.1.5 root 45: uint64 Read8(uint32 addr) override;
46: uint64 Read16(uint32 addr) override;
47: uint64 Write8(uint32 addr, uint32 data) override;
48: uint64 Write16(uint32 addr, uint32 data) override;
49: uint64 Peek8(uint32 addr) override;
1.1 root 50:
1.1.1.2 root 51: IODevice *SearchDevice(uint32 addr) const;
1.1 root 52:
53: void AddDevice(IODevice *dev);
54:
55: std::vector<IODevice*> devlist;
56: };
57:
58: MuxDevice::MuxDevice()
1.1.1.8 ! root 59: : inherited("MuxDevice")
1.1 root 60: {
61: }
62:
63: MuxDevice::~MuxDevice()
64: {
65: }
66:
1.1.1.3 root 67: // デバイスを追加する。
68: // ここに追加するデバイスは dev->devlen を指定すること。
1.1 root 69: void
70: MuxDevice::AddDevice(IODevice *dev)
71: {
72: if (dev->devlen == 0) {
1.1.1.3 root 73: printf("MuxDevice::AddDevice: '%s' devlen not set!\n",
1.1.1.8 ! root 74: dev->GetName().c_str());
1.1 root 75: exit(1);
76: }
77: devlist.push_back(dev);
78: }
79:
80: IODevice *
1.1.1.2 root 81: MuxDevice::SearchDevice(uint32 addr) const
1.1 root 82: {
83: for (const auto& d : devlist) {
84: if (d->devaddr <= addr && addr < d->devaddr + d->devlen) {
85: return d;
86: }
87: }
88: return nullptr;
89: }
90:
91: uint64
92: MuxDevice::Read8(uint32 addr)
93: {
94: IODevice *d = SearchDevice(addr);
95: if (d == nullptr) {
96: return (uint64)-1;
97: }
98: return d->Read8(addr);
99: }
100:
101: uint64
102: MuxDevice::Read16(uint32 addr)
103: {
104: IODevice *d = SearchDevice(addr);
105: if (d == nullptr) {
106: return (uint64)-1;
107: }
108: return d->Read16(addr);
109: }
110:
111: uint64
112: MuxDevice::Write8(uint32 addr, uint32 data)
113: {
114: IODevice *d = SearchDevice(addr);
115: if (d == nullptr) {
116: return (uint64)-1;
117: }
118: return d->Write8(addr, data);
119: }
120:
121: uint64
122: MuxDevice::Write16(uint32 addr, uint32 data)
123: {
124: IODevice *d = SearchDevice(addr);
125: if (d == nullptr) {
126: return (uint64)-1;
127: }
128: return d->Write16(addr, data);
129: }
130:
131: uint64
132: MuxDevice::Peek8(uint32 addr)
133: {
134: IODevice *d = SearchDevice(addr);
135: if (d == nullptr) {
136: return (uint64)-1;
137: }
138: return d->Peek8(addr);
139: }
140:
141:
1.1.1.6 root 142: std::unique_ptr<XIOSpaceDevice> gXIOSpace;
143:
1.1 root 144: // コンストラクタ
145: XIOSpaceDevice::XIOSpaceDevice()
1.1.1.8 ! root 146: : inherited("IOSpace")
1.1 root 147: {
148: #define ADD_DEVICE(varname, clsname) do { \
1.1.1.2 root 149: varname.reset(new clsname); \
150: AddDevice(varname.get()); \
1.1 root 151: } while (0)
152:
153: // デバイスクラス作成 (順序に注意)
1.1.1.6 root 154: ADD_DEVICE(gAreaSet, AreaSetDevice());
1.1.1.4 root 155: ADD_DEVICE(gCGROM, CGROMDevice());
1.1.1.3 root 156: ADD_DEVICE(gCRTC, BusIO_W<CRTCDevice>());
157: ADD_DEVICE(gDMAC, BusIO_B<DMACDevice>());
1.1.1.5 root 158: ADD_DEVICE(gFDC, BusIO_EB<FDCDevice>());
1.1 root 159: ADD_DEVICE(gGVRAM, GVRAMDevice());
1.1.1.5 root 160: ADD_DEVICE(gPEDEC, BusIO_EB<PEDECDevice>());
1.1.1.4 root 161: ADD_DEVICE(gIPLROM1, IPLROM1Device());
162: ADD_DEVICE(gIPLROM2, IPLROM2Device());
1.1.1.3 root 163: ADD_DEVICE(gMFP, BusIO_EB<MFPDevice>());
1.1.1.6 root 164: ADD_DEVICE(gPluto, PlutoDevice());
165: ADD_DEVICE(gPPI, BusIO_EB<PPIDevice>());
166: ADD_DEVICE(gPrinter, PrinterDevice());
1.1.1.3 root 167: ADD_DEVICE(gRTC, BusIO_EB<RP5C15Device>());
168: ADD_DEVICE(gSCC, BusIO_EB<SCCDevice>());
1.1.1.4 root 169: ADD_DEVICE(gSRAM, SRAMDevice()); // Required by SPC
1.1.1.2 root 170: ADD_DEVICE(gSPC, BusIO_X68kSPC<SPCDevice>());
1.1.1.6 root 171: ADD_DEVICE(gSprite, SpriteDevice());
172: ADD_DEVICE(gSysport, BusIO_FB<SysportDevice>());
1.1 root 173: ADD_DEVICE(gTVRAM, TVRAMDevice());
1.1.1.3 root 174: ADD_DEVICE(gVideoCtlr, BusIO_W<VideoCtlrDevice>());
1.1.1.5 root 175: ADD_DEVICE(gOPM, BusIO_EB<OPMDevice>());
1.1.1.4 root 176: }
177:
178: // デストラクタ
179: XIOSpaceDevice::~XIOSpaceDevice()
180: {
181: }
182:
183: bool
184: XIOSpaceDevice::Init()
185: {
186: // RAM のみ RamDevice::Init() で ram_size が決定してから行う。
1.1.1.6 root 187: int ram_size = gRAM->GetSize();
1.1.1.4 root 188: for (int i = 0; i < ram_size / 8192; i++) {
189: table[i] = gRAM.get();
190: }
191:
192: // 必要なデバイスは全部埋めたので、この時点で nullptr なエントリを
1.1.1.7 root 193: // BusErr に差し替える。
1.1.1.4 root 194: for (auto&& d : table) {
195: if (d == nullptr) {
1.1.1.7 root 196: d = gBusErr.get();
1.1.1.4 root 197: }
198: }
1.1 root 199:
200: // デバッグ表示
201: if (0) {
202: for (int i = 0; i < 512; i++) {
203: printf("[%3d] $%06x ", i, 0xc00000 + i * 8192);
1.1.1.4 root 204: assert(table[i]);
205: if (dynamic_cast<MuxDevice*>(table[i])) {
1.1 root 206: printf("MuxDevice\n");
1.1.1.4 root 207: } else {
1.1.1.8 ! root 208: printf("%s\n", table[i]->GetName().c_str());
1.1 root 209: }
210: }
211: }
212:
1.1.1.4 root 213: return true;
1.1 root 214: }
215:
216: // デバイステーブルに dev を追加する。
1.1.1.3 root 217: // ここに追加するデバイスは dev->devlen を指定すること。
1.1 root 218: void
219: XIOSpaceDevice::AddDevice(IODevice *dev)
220: {
221: if (dev->devaddr == 0) {
1.1.1.3 root 222: printf("XIOSpaceDevice:AddDevice: '%s' devaddr not set!\n",
1.1.1.8 ! root 223: dev->GetName().c_str());
1.1 root 224: exit(1);
225: }
226: if (dev->devlen == 0) {
1.1.1.3 root 227: printf("XIOSpaceDevice:AddDevice: '%s' devlen not set!\n",
1.1.1.8 ! root 228: dev->GetName().c_str());
1.1 root 229: exit(1);
230: }
231:
232: int idx = dev->devaddr / 8192;
233: for (int i = idx; i < idx + (dev->devlen + 8191) / 8192; i++) {
234: if (table[i] == nullptr) {
235: table[i] = dev;
236: } else {
1.1.1.4 root 237: MuxDevice *mux = dynamic_cast<MuxDevice*>(table[i]);
238: if (mux) {
239: mux->AddDevice(dev);
240: } else {
241: MuxDevice *muxdev = new MuxDevice();
242: muxdev->AddDevice(table[i]);
243: muxdev->AddDevice(dev);
244: table[i] = muxdev;
245: }
1.1 root 246: }
247: }
248: }
249:
250: uint64
251: XIOSpaceDevice::Read8(uint32 addr)
252: {
253: addr &= 0x00ffffff;
254: IODevice *d = SearchDevice(addr);
255: return d->Read8(addr);
256: }
257:
258: uint64
259: XIOSpaceDevice::Read16(uint32 addr)
260: {
261: addr &= 0x00ffffff;
262: IODevice *d = SearchDevice(addr);
263: return d->Read16(addr);
264: }
265:
266: uint64
267: XIOSpaceDevice::Read32(uint32 addr)
268: {
269: addr &= 0x00ffffff;
270: IODevice *d = SearchDevice(addr);
271: return d->Read32(addr);
272: }
273:
274: uint64
275: XIOSpaceDevice::Write8(uint32 addr, uint32 data)
276: {
277: addr &= 0x00ffffff;
278: IODevice *d = SearchDevice(addr);
279: return d->Write8(addr, data);
280: }
281:
282: uint64
283: XIOSpaceDevice::Write16(uint32 addr, uint32 data)
284: {
285: addr &= 0x00ffffff;
286: IODevice *d = SearchDevice(addr);
287: return d->Write16(addr, data);
288: }
289:
290: uint64
291: XIOSpaceDevice::Write32(uint32 addr, uint32 data)
292: {
293: addr &= 0x00ffffff;
294: IODevice *d = SearchDevice(addr);
295: return d->Write32(addr, data);
296: }
297:
298: uint64
299: XIOSpaceDevice::Peek8(uint32 addr)
300: {
301: addr &= 0x00ffffff;
302: IODevice *d = SearchDevice(addr);
303: return d->Peek8(addr);
304: }
1.1.1.7 root 305:
306: // ブートページを切り替える。
307: // (VM_X68030::SwitchBootPage() の下請け)
308: void
309: XIOSpaceDevice::SwitchBootPage(bool isrom)
310: {
311: IODevice *ram;
312: IODevice *rom;
313:
314: if (isrom) {
315: // 0x000000 からの 64KB ( 8エントリ)、
316: // 0xfe0000 からの 128KB (16エントリ) のどちらも IPLROM0 が担当する。
317: ram = gIPLROM0.get();
318: rom = ram;
319: } else {
320: // 0x000000 からの 64KB ( 8エントリ) に RAM を見せる。
321: // 0xfe0000 からの 128KB (16エントリ) に IPLROM1 を見せる。
322: ram = gRAM.get();
323: rom = gIPLROM1.get();
324: }
325:
326: for (int i = 0; i < 8; i++) {
327: table[i] = ram;
328: }
329: for (int i = 0; i < 16; i++) {
330: table[table.size() - 16 + i] = rom;
331: }
332: }
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